Eddy current
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Pulsed Eddy Current (PEC) testing is a non-destructive testing (NDT) technique that has been widely used in various applications, including the detection and characterization of defects in metallic materials. The measurement of pulsed eddy current signals is essential for this purpose. This study proposes a novel multi-sensor PEC approach for improved defect detection.
6p 
viyoko
01-10-2024
2
2
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Bài viết ứng dụng kỹ thuật dòng xoáy xung (Pulsed eddy current – PEC) để đánh giá mức độ hao hụt của bề dày đường ống mà không cần tháo gỡ lớp bảo ôn. Kết quả thu được cho thấy có thể xác định sự hiện diện và khoanh vùng của ăn mòn dưới lớp bảo ôn.
7p vidumbledore
19-01-2023
18
4
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Bài viết trình bày về sáu phương pháp NDT phổ biến tại Việt Nam, bao gồm kiểm tra trực quan (Visual Testing VT) kiểm tra bột từ (Magnetic Particle Testing MT) chụp ảnh phóng xạ (Radiography Testing RT), siêu âm (Ultrasonic Testing UT), kiểm tra thẩm thấu lỏng (Liquid Penetrant Testing PT), kiểm tra dòng điện xoáy (Eddy Current Testing ECT) trong đó đề cập đến khái niệm, ưu nhược điểm và ứng dụng của phương pháp đối với từng chuyên ngành cơ khí cụ thể.
15p vinevada2711
19-03-2021
39
4
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In this paper, the subproblem method with using edge finite elements is proposed for coupling subproblems via several steps to treat and deal with some troubles regarding to electromagnetic problems that gets quite difficulties when directly applying a finite element method. In the strategy subproblem method, it allows a complete problem to define into several subproblems with adapted dimensions. Each subproblem can be solved on its independent domain and mesh without performing in whole domain or mesh. This easily supports meshing and decreases computing time.
7p larachdumlanat127
02-01-2021
18
2
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In this article, we propose a two-process coupling subproblem technique for improving the errors that overcome thin shell assumptions. This technique is based on the subproblem method to couple SPs in two-processes. The first scenario is an initial problem solved with coils/stranded inductors together with thin region models. The obtained solutions are then considered as volume sources for the second scenario, including actual volume improvements that scope with the thin shell assumptions.
4p larachdumlanat127
02-01-2021
6
2
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The capability of eddy current testing (ECT) for the bottom mounted instrumentation (BMI) weld area of reactor vessel in a pressurized water reactor was demonstrated by the developed ECT system and procedure.
8p christabelhuynh
31-05-2020
18
0
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An Eddy current damper uses magnets to suppress vibrations due to external excitations. These dampers also called electromagnetic dampers, have advantages of no mechanical contact, high reliability and stability, but require a relatively large volume and mass to attain a given amount of damping.
8p tohitohi
19-05-2020
25
3
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Inductive proximity sensors are widely used in various applications to detect metal devices. They consist of an oscillator, trigger, and switching amplifier. If a metal object enters the electromagnetic field of the oscillator coil, eddy currents are induced in this coil which change the amplitude of oscillation, which causes the trigger stage to trip and the semiconductor output stage to switch.
16p mr_thanhhung
19-05-2012
351
90
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